In reply to purplemonkeyelephant:
Where I have seen people climbing with 2 axes on grade 1 snow there has been a tendency to over-focus on axe-placement and holding onto them, rather than placing feet well and securely. "Transparent ice" is not something I've ever seen on No.4, so in those (freak) conditions you can possibly award yourself grade 2!
Short-roping, ie moving together with a short length of rope between leader and second/seconds is a pretty full-on "guiding" technique which requires the leader to make a very fine judgement on whether they can react to a slip by the second and absorb it before it becomes a sliding fall (for everyone). It's taken me years as an instructor to develop a sense of where and when it will work (or not). I'd say that No.4 would need to be quite soft for me to be comfortable with it. I do see the logic of "transporting" the rope in chest coils to the point at the top where it is likely to be deployed for a belayed pitch, but increasingly I do this with the rope just coiled on me, and an end with carabiner ready to clip on to a client/partner if things are starting to feel spooky!
I also do increasingly see the ability to move up, down and sideways unroped on "approach" ground, which is typically non-technical but highly consequential, as a core mountain skill. I aim to coach this to as high a standard as possible on lower slopes or through simple repetition on "bumpy" hillwalking terrain before going onto something like No.4.
Hope this helps and doesn't read like a polemic!
Post edited at 12:37